Primary Muscle Group: Biceps
Other Muscle Groups Worked in This Exercise: Forearms
Breathing: Breath out as you start the exercise movement, and breath in as you move back to the start position.
Execution: Loop the towel through the handle of the kettlebell. Grab the towel and do a standard curl. The towel end leading toward the kettlebell should be going to the outside of your hand (the thumb). This puts the appropriate stress on the biceps and also increases forearm activation.